Construction of the Roman metro continues with almost 100 metres of diaphragm walls under the Tiber river

Rome's newest metro section will be built under the Tiber River, according to a report by railway.com news report. According to the newspaper, the section of the C metro line, which will have four new stations, will be built by a consortium led by Webuild and Vianini Lavori.

The nearly €2 billion project is expected to start next January. A total of four kilometres of metro line will be built from Venezia station to Clodio/Mazzini, with the creation of Chiesa Nuova, San Pietro, Ottaviano (which will also connect to line A) and Clodio/Mazzini metro stations.

Significant archaeological sites to be built on

Metro Line C, which is under continuous construction and will operate without a guideway, is intended to connect the south-eastern suburbs of Rome with the north-west. Construction has started in the south-east, with the first section being inaugurated in 2014.

The project under consideration is one of the most complex underground engineering challenges in Rome, as the line will have to pass 25 metres under the Tiber river and through important archaeological sites. The construction will use slurry walls of around 90 metres deep, a technique that has been successfully used in the ongoing construction of the Venezia station.

Construction work at the Angel Castle is almost 50 metres deep

Chiesa Nuova and San Pietro will be archaeological stations, i.e. they will be built according to plans that integrate the Roman heritage and the surrounding urban features. The San Pietro station will be located in one of the city's most famous monuments, the garden of Castel Sant' Angelo on the right bank of the Tiber.

This station will descend to a depth of 48 metres, making it the deepest and one of the most visually striking stations on the network. Its design has been harmonised with the surrounding historic landmarks.

Giant station built on the adjacent stretch

Webuild, an Italian-based company with a presence in 50 countries, is currently working on the previous section of Metro C: the final tests are already underway between San Giovanni and the Colosseum. Construction is also underway on the Venezia station, which will start in June 2023: the station, which will be extended to a depth of 40 metres, will have 8 levels.

The sub-project, estimated at €700 million alone, will include a large underground museum complex. Among other things, 66,000 cubic metres of material will be extracted and 27 escalators will be built alongside 6 lifts.